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https://www.readbyqxmd.com/read/28791033/sink-status-and-photosynthetic-rate-of-the-leaflet-galls-induced-by-bystracoccus-mataybae-eriococcidae-on-matayba-guianensis-sapindaceae
#1
Denis C Oliveira, Ana Silvia F P Moreira, Rosy M S Isaias, Vitor Martini, Uiara C Rezende
The galling insect Bystracoccus mataybae (Eriococcidae) induces green and intralaminar galls on leaflets of Matayba guianensis (Sapindaceae), and promotes a high oxidative stress in host plant tissues. This biotic stress is assumed by the histochemical detection of hydrogen peroxide, a reactive oxygen species (ROS), whose production alters gall physiology. Thus, we hypothesize that high levels of nutrients are accumulated during gall development in response to a local maintenance of photosynthesis and to the galling insect activity...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28783581/high-doses-of-s-methylcysteine-cause-hypoxia-induced-cardiomyocyte-apoptosis-accompanied-by-engulfment-of-mitochondaria-by-nucleus
#2
Mohammed A El-Magd, Walied S Abdo, Mustafa El-Maddaway, Nasr M Nasr, Rasha A Gaber, Eman S El-Shetry, Ayman A Saleh, Faisal Abdulrahman Ali Alzahrani, Doaa H Abdelhady
Despite its important role as a medicinal plant, some studies reported a toxic effect for garlic (Allium sativum) when given in higher doses. Herein, we investigated the possible cardiotoxic effects of high doses of S-methylcysteine (SMC), a water soluble organosulfur compound present in garlic. Rats were orally administered SMC at a low dose (50mg), high dose (150mg) and very high dose (300mg)/kg body weight, or saline (control) for 10days. High and very high doses of SMC resulted in a significant increase in serum cardiac injury biomarkers [aspartate transaminase (AST), lactate dehydrogenase (LDH), creatine kinase (CK) and cardiac troponin T (cTnT)], as well as oxidative stress marker nitric oxide (NO) concentration in heart and a significant decrease in cardiac superoxide dismutase (SOD) activity...
August 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28777815/biochemical-adaptations-of-four-submerged-macrophytes-under-combined-exposure-to-hypoxia-and-hydrogen-sulphide
#3
Mahfuza Parveen, Takashi Asaeda, Md H Rashid
A hydroponic experiment was performed to investigate the stress responses and biochemical adaptations of four submerged macrophytes, Potamogeton crispus, Myriophyllum spicatum, Egeria densa, and Potamogeton oxyphyllus, to the combined exposure of hypoxia and hydrogen sulfide (H2S, provided by NaHS). The investigated plants were subjected to a control, hypoxia, 0.1mM NaHS, 0.5 mM NaHS, 0.1 mM NaHS+hypoxia and 0.5 mM NaHS+hypoxia conditions. All experimental plants grew optimally under control, hypoxic and NaHS conditions in comparison to that grown in the combined exposure of hypoxia and hydrogen sulfide...
2017: PloS One
https://www.readbyqxmd.com/read/28755319/a-novel-family-of-proline-serine-rich-proteins-which-are-phospho-targets-of-stress-related-mitogen-activated-protein-kinases-differentially-regulates-growth-and-pathogen-defense-in-arabidopsis-thaliana
#4
Mieder Anthony Thomas Palm-Forster, Lennart Eschen-Lippold, Joachim Uhrig, Dierk Scheel, Justin Lee
The molecular actions of mitogen-activated protein kinases (MAPKs) are ultimately accomplished by the substrate proteins where phosphorylation affects their molecular properties and function(s), but knowledge regarding plant MAPK substrates is currently still fragmentary. Here, we uncovered a previously uncharacterized protein family consisting of three proline/serine-rich proteins (PRPs) that are substrates of stress-related MAPKs. We demonstrated the importance of a MAPK docking domain necessary for protein-protein interaction with MAPKs and consequently also for phosphorylation...
July 28, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28741704/methylation-of-protein-phosphatase-2a-influence-of-regulators-and-environmental-stress-factors
#5
Maria T Creighton, Anna Kolton, Amr R A Kataya, Jodi Maple-Grødem, Irina O Averkina, Behzad Heidari, Cathrine Lillo
Protein phosphatase 2A catalytic subunit (PP2A-C) has a terminal leucine subjected to methylation, a regulatory mechanism conserved from yeast to mammals and plants. Two enzymes, LCMT1 and PME1, methylate and demethylate PP2A-C, respectively. The physiological importance of these posttranslational modifications is still enigmatic. We investigated these processes in Arabidopsis thaliana by mutant phenotyping, global expression analysis, and by monitoring methylation status of PP2A-C under different environmental conditions...
July 25, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28740502/the-amp-activated-protein-kinase-kin10-is-involved-in-the-regulation-of-autophagy-in-arabidopsis
#6
Liang Chen, Ze-Zhuo Su, Li Huang, Fan-Nv Xia, Hua Qi, Li-Juan Xie, Shi Xiao, Qin-Fang Chen
Autophagy is a highly conserved system in eukaryotes for the bulk degradation and recycling of intracellular components. Autophagy is involved in many physiological processes including development, senescence, and responses to abiotic and biotic stress. The adenosine 5'-monophosphate (AMP)-activated protein kinase AMPK positively regulates autophagy in mammals; however, the potential function of AMPK in plant autophagy remains largely unknown. Here, we identified KIN10, a plant ortholog of the mammalian AMPK, as a positive regulator of plant autophagy and showed that it acts by affecting the phosphorylation of ATG1 (AUTOPHAGY-RELATED GENE 1) proteins in Arabidopsis...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28735390/the-role-of-long-noncoding-rnas-in-plant-stress-tolerance
#7
Yuepeng Song, Deqiang Zhang
Plants must adapt to multiple biotic and abiotic stresses ; thus, sensing and responding to environmental signals is imperative for their survival. Moreover, understanding these responses is imperative for efforts to improve plant yield and consistency. Regulation of transcript levels is a key aspect of the plant response to environmental signals. Long noncoding RNAs (lncRNAs) have gained widespread attention in recent years with the advance of high-throughput sequencing technologies. As important biological regulators, lncRNAs have been implicated in a wide range of developmental processes and diseases in animals...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28716182/atp-sensing-in-living-plant-cells-reveals-tissue-gradients-and-stress-dynamics-of-energy-physiology
#8
Valentina De Col, Philippe Fuchs, Thomas Nietzel, Marlene Elsässer, Chia Pao Voon, Alessia Candeo, Ingo Seeliger, Mark D Fricker, Christopher Grefen, Ian Max Møller, Andrea Bassi, Boon Leong Lim, Marco Zancani, Andreas J Meyer, Alex Costa, Stephan Wagner, Markus Schwarzländer
Growth and development of plants is ultimately driven by light energy captured through photosynthesis. ATP acts as universal cellular energy cofactor fuelling all life processes, including gene expression, metabolism, and transport. Despite a mechanistic understanding of ATP biochemistry, ATP dynamics in the living plant have been largely elusive. Here, we establish MgATP(2-) measurement in living plants using the fluorescent protein biosensor ATeam1.03-nD/nA. We generate Arabidopsis sensor lines and investigate the sensor in vitro under conditions appropriate for the plant cytosol...
July 18, 2017: ELife
https://www.readbyqxmd.com/read/28705037/saffron-and-its-derivatives-crocin-crocetin-and-safranal-a-patent-review
#9
Maryam Rameshrad, Bibi Marjan Razavi, Hossein Hosseinzadeh
Saffron and its main components have traditionally been used as pharmaceutical agents. Current experimental research projects have also exhibited their applications in a wide spectrum of disorder treatments. Area covered: This review covers the demonstrated findings and patents on therapeutic/pharmaceutical properties of saffron and related derivatives, since 2000 to bold their outstanding merit on human health. An extensive literature review was performed in USP Patent, Patentscope, Espacenet and Google Patent in the field of CNS, cardiovascular, urogenital, dermatological and inflammatory disorders...
July 13, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28698356/root-bending-is-antagonistically-affected-by-hypoxia-and-erf-mediated-transcription-via-auxin-signaling
#10
Emese Eysholdt-Derzso, Margret Sauter
When plants encounter soil water logging or flooding, roots are the first organs to be confronted with reduced gas diffusion resulting in limited oxygen supply. Since roots do not generate photosynthetic oxygen they are rapidly faced with oxygen shortage rendering roots particularly prone to damage. While metabolic adaptations to low oxygen conditions, that ensure basic energy supply, have been well characterized, adaptation of root growth and development have received less attention. In this study we show that hypoxic conditions cause the primary root to grow sidewise in a low oxygen environment possibly to escape soil patches with reduced oxygen availability...
July 11, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28656233/resveratrol-inhibits-hypoxia-induced-proliferation-and-migration-of-pulmonary-artery-vascular-smooth-muscle-cells-by-inhibiting-the-phosphoinositide-3-kinase-protein-kinase-b-signaling-pathway
#11
Zhanjiang Guan, Li Shen, Huan Liang, Haitao Yu, Bingchang Hei, Xianguo Meng, Lei Yang
Hypoxia is a risk factor for severe chronic obstructive pulmonary disease, which aggravates the disease and may cause mortality by inducing hypoxic pulmonary hypertension (HPH). Proliferation and migration of pulmonary artery smooth muscle cells (PASMCs) may mediate this effect. Resveratrol is a phenolic compound extracted from a plant and has been reported to alleviate HPH, although the underlying mechanisms remained to be elucidated. In cancer, resveratrol has been reported to abrogate the phosphoinositide 3‑kinase/protein kinase B (AKT) signaling pathway, thereby inhibiting tumor development...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28647509/a-review-of-acalypha-indica-l-euphorbiaceae-as-traditional-medicinal-plant-and-its-therapeutic-potential
#12
REVIEW
Nor Syahiran Zahidin, Syafiqah Saidin, Razauden Mohamed Zulkifli, Ida Idayu Muhamad, Harisun Ya'akob, Hadi Nur
ETHNOPHARMACOLOGICAL RELEVANCE: Acalypha indica is an herbal plant that grows in wet, temperate and tropical region, primarily along the earth's equator line. This plant is considered by most people as a weed and can easily be found in these regions. Although this plant is a weed, Acalypha indica has been acknowledged by local people as a useful source of medicine for several therapeutic treatments. They consume parts of the plant for many therapeutics purposes such as anthelmintic, anti-ulcer, bronchitis, asthma, wound healing, anti-bacterial and other applications...
June 21, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28636266/marap2-4-a-waterlogging-responsive-erf-from-mentha-regulates-bidirectional-sugar-transporter-atsweet10-to-modulate-stress-response-in-arabidopsis
#13
Ujjal J Phukan, Gajendra Singh Jeena, Vineeta Tripathi, Rakesh Kumar Shukla
As waterlogging and successive events severely influence growth and development of economically important plants, we attempted to characterize the role of a waterlogging-responsive Group I (A-6) Ethylene response factor (MaRAP2-4) from Mentha arvensis. Waterlogging, ethylene and Methyl jasmonate rapidly induced the expression of MaRAP2-4. MaRAP2-4 interacted with multiple cis-elements like Dehydration response elements (DRE1/2), Anoxia/Jasmonic acid response element (JARE) and GCC box showing its involvement in multiple responses...
June 21, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28605408/casparian-bands-and-suberin-lamellae-in-exodermis-of-lateral-roots-an-important-trait-of-roots-system-response-to-abiotic-stress-factors
#14
Edita Tylová, Eva Pecková, Zuzana Blascheová, Aleš Soukup
Background and Aims: Root absorptive characteristics rely on the presence of apoplastic barriers. However, little is known about the establishment of these barriers within a complex root system, particularly in a major portion of them - the lateral roots. In Zea mays L., the exodermis differentiates under the influence of growth conditions. Therefore, the species presents a suitable model to elucidate the cross-talk among environmental conditions, branching pattern and the maturation of barriers within a complex root system involved in the definition of the plant-soil interface...
June 12, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28579900/imperatorin-protects-h9c2-cardiomyoblasts-cells-from-hypoxia-reoxygenation-induced-injury-through-activation-of-erk-signaling-pathway
#15
Bihong Liao, Ruimian Chen, Feng Lin, Aihuan Mai, Jie Chen, Huimin Li, Shaohong Dong, Zhenglei Xu
BACKGROUND: Imperatorin is a compound found in plants and has been widely used in Chinese medicine for many years. It has many pharmacological effects, including the recently reported anti-apoptotic function, however, the mechanism largely remains unclear. This study is aimed to elucidate the mechanism of Imperatorin's anti-apoptotic function. METHODS: A model of hypoxia and reoxygenation (H/R) treated h9c2 cardiomyoblasts was successfully constructed. The cells were treated with H/R condition, and followed by adding Imperatorin alone, Imperatorin with ERK inhibitor and/or ERK inhibitor alone, to examine the cell viability by Cell Counting Kit-8 assay, cell apoptosis rate by flow cytometry, and ERK expression by Western-blot under different conditions...
May 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28568609/two-minuses-can-make-a-plus-waterlogging-and-elevated-co2-interactions-in-sweet-cherry-prunus-avium-cultivars
#16
Margarita Pérez-Jiménez, María Hernández-Munuera, M Carmen Piñero, Gregorio López-Ortega, Francisco M Del Amor
The increase in the ambient concentration of CO2 and other greenhouse gases is producing climate events that can compromise crop survival. However, high CO2 concentrations are sometimes able to mitigate certain stresses such as salinity or drought. In this experiment, the effects of waterlogging and CO2 are studied in combination to elucidate the eventual response in sweet cherry trees. For this purpose, four sweet cherry cultivars ('Burlat', 'Cashmere', 'Lapins, and 'New Star') were grafted on a typically hypoxia-tolerant rootstock ('Mariana 2624') and were submitted to waterlogging for 7 days at either ambient CO2 concentration (400 µmol mol(-1) ) or at elevated CO2 (800 µmol mol(-1) )...
June 1, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28567028/gelsemium-elegans-poisoning-a-case-with-8%C3%A2-months-of-follow-up-and-review-of-the-literature
#17
Zhou Zhou, Lei Wu, Yuhua Zhong, Xiaobo Fang, Yanmei Liu, Hongbing Chen, Weixi Zhang
BACKGROUND: Gelsemium elegans (G. elegans) is a toxic plant indigenous to Southeast Asia. It is highly poisonous due to its strong respiratory depressive effect. However, G. elegans poisoning cases have not been summarized comprehensively and are rarely reported in English journals. Furthermore, none of the present reports present prognosis in detail. CASE PRESENTATION: A 26-year-old female was found comatose at home and brought to the hospital with deep coma, hypoxia, and acidosis...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28559476/noncanonical-alternative-polyadenylation-contributes-to-gene-regulation-in-response-to-hypoxia
#18
Laura de Lorenzo, Reed Sorenson, Julia Bailey-Serres, Arthur G Hunt
Stresses from various environmental challenges continually confront plants, and their responses are important for growth and survival. One molecular response to such challenges involves the alternative polyadenylation of mRNA. In plants, it is unclear how stress affects the production and fate of alternative mRNA isoforms. Using a genome-scale approach, we show that in Arabidopsis thaliana, hypoxia leads to increases in the number of mRNA isoforms with polyadenylated 3' ends that map to 5'-untranslated regions (UTRs), introns, and protein-coding regions...
June 2017: Plant Cell
https://www.readbyqxmd.com/read/28549801/methanolic-extract-of-boswellia-serrata-exhibits-anti-cancer-activities-by-targeting-microsomal-prostaglandin-e-synthase-1-in-human-colon-cancer-cells
#19
Tayebeh Ranjbarnejad, Massoud Saidijam, Shirin Moradkhani, Rezvan Najafi
BACKGROUND: Colorectal cancer (CRC) is the most common cancer. A proper method to reduce mortality of CRC is chemoprevention to prevent initiation and promotion of intestinal tumorgenesis. One of the promising and developing chemopreventive agents is natural compounds found in plants. Frankincense, the resin extract from the Boswellia specious, has been used in traditional and modern medicine for treating various diseases with very minimal side effects. In the current study, we investigated the anti-cancer activity of methanolic extract of Boswellia serrata (B...
May 24, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28543362/commd1-a-multifunctional-regulatory-protein
#20
Mario Riera Romo
The COMMD Protein Family is highly conserved among multicellular eukaryotic organisms and many orthologs of human COMMD genes have been found in different species of plants, invertebrates, lower vertebrates and mammals. COMMD1 is the best characterized member of the family and is conserved among vertebrates. This protein represents a pleiotropic factor involved in the regulation of many cellular and physiological processes that include copper and cholesterol homeostasis, ionic transport, oxidative stress, protein aggregation, protein trafficking, NF-κB-mediated transcription, hypoxia induced transcription, DNA damage response and oncogenesis...
May 20, 2017: Journal of Cellular Biochemistry
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